A Power Thicker than Blood

A Power Thicker than Blood is the first book of a series that follows routes. There are three main protagonists of each story, and all of the events in each book happen around about the same time. Three teenagers of the same age, located in different countries. Fudou Kousuke of Sapphire Country is the main focus of this book. In another route, it is Johannes Schelzier of Diamond Country. In the final route of the three, it is Kushido Kim of Crystal Country. An action-horror that focuses on relationships between the protagonists and those around them. With the potential of war as an underlying theme.